How old is my watch? Cricket age determination based on models with known year of manufacture

Approximate age determination according to the principle "not older than":

1956 "Golden Voice" Kal Vulcain 406, rhodium-plated, Exactomatik, hand-wound

1957 "Golden Voice" Cal. Vulcain 406, Milanese bracelet, Exactomatik, rhodium-plated, stainless steel

1958 Calendar Kal Vulcain 402 S1, double pressure back, 2 barrels, 17 jewels

1960 Cal Vulcain 120, 18K gold, double push back, 2 barrels, 17 jewels

1961 Cricket Nautical Kal Vulcain 120, 2 barrels, double pressure back, 2 barrels

1969 Cricket Nautical Kal MSR S2, Exactomatik, hand-wound, rhodium-plated

1970 Cal MSR S2, striped finish, 2 barrels, double stainless steel push back

Source: Classic Wristwatches Catalogue